Thanks the advice was super helpful.

I had declared some of the variables for initialising my SD card on the stack (I'm pretty sure the issue was with my sdmmc_card_t) as I didn't realise the SD card library stored the pointer value because I assumed it would copy the contents.

Hi I am seeking help regarding this issue.

I am working on a C++ ESP-IDF project using an SD card with SDSPI, VFS, and FATFS.
The project also includes TWAI, BLE (using bluedroid), and another SPI device however I have disabled the rest of the functionality while I bugfix this issue.
I am using ...